I did get some insight into the ‘787 replacing the 744’ scenario. 6 787s will actually increase capacity based on the plans of how the entire 787 network will fit together. IE they’ll get more hours out of the 787s to more destinations than they will he equivalent number of 744s. It’s therefore likely they’ll actually need more crew for those 6 787s than they currently have for the similar number of 744s they’ll replace. (Not sure of exact numbers).